Metal weather strip for mechanically balanced windows



March 30, 1937. F. w. KAMMERER METAL WEATHER STRIP FOR MECHANICALLY BALANCED WINDOWS Filed April 1, 1956 IIIIIIIIIAII1 Patented Mar. 30, 1937 UNITED STATES METAL WEATHER STRIP FOR MECHANI- CALLY-BALANCED WINDOWS Fred W. Kamrnerer, New York, N. Y.

ApplicationiApi-il 1, 1936, Serial No. 72,033

Claims.

This invention relates to new and. useful improvements in metal weather strips for mechanically balanced windows.

The invention has for an object the applica- 5 tion of metal weather strips to double hung windows which are of simple form and which act very efficiently.

More specifically, the invention particularly contemplates the combination of the weather strips with: window sashles having completely grooved edges which accommodate asuitable balancing mechanism. Heretofore, weather strips were applied only to window sashes having partially grooved edges. This: invention contemplates forming the weather stripswith a portion which may be engaged into the completely grooved edges and secured in position.

Another object of the invention is the provision of a plurality of resilient tongues or similar parts stamped from portions of the material of the weather strips and engaging other portions,

in a manner so as toreduce the'frictional resist-.

ance between the parts.

Still further the invention proposes the con- 5 struction of a device as mentioned'which issimple and durable and whichmay bemanufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects and advantages thereof, ref- 3 erence will be had to the-following description and. accompanying drawing, and to theappended claims in which the various novel features of the invention are more-particularly set forth.

In the accompanying drawing forming'a'ma terial part of this disclosure:

Fig. 1 is a fragmentary horizontal sectional view of a portion of a window frame and a sash, and weather strips constructed according to this invention applied thereto.

Fig. 2 is a fragmentary sectional view taken on the line 2-2 of Fig. 1.

Fig. 3 is a horizontal sectional view of the frameweather strip.

Fig. 4 is a horizontal sectional View of the sash.

weather strip.

Fig. 5 is a perspective view of a frame weather strip constructed according to a modification of the invention.

Fig. 6 is a perspective View of a sash weather strip constructed according to a modification of the invention.

Fig. 7 is a fragmentary elevational view of Fig. 6.

55 Fig. 8 is a horizontal sectional view of the weather strips shown in Figs. 5 and 6 shown engaged with each other.

The metal weather strips, according to this invention, are intended to be used in combination with a window frame I0 having a sash ll slidably associated with it. The invention relates only to sashes II which are formed with. edges of complete side grooves II, from top to bottom of the sashes, in which suitable balancing mechanisms are provided. Heretofore, these edge grooves were solely used to accommodate the balancing mechanism which support the sashes.

The metal weather strips according to this invention are used in combination with a window frame and sash. One of these strips comprises a frame strip having a broad base portion l2 attached at one edge portion by nails 93 to the frame ID. This broad base I2 is bent at its free end to grip the frame and extends substantially the entire thickness of the window sash and extends across the groove ll It continues into an inwardly offset portion l2 which continues into a rearwardly directed U-shaped socket portion I2 adjacent the guiding strip l6.

Another of the strips is a sash strip and is provided for the sash of the window and has a narrow base portion M adapted to extend into the groove ll and to be secured fixedly in position by nails 15 or other fastening elements. This narrow base l4 continues into a portion parallel to and opposed to the offset portion l2 This portion l4 continues into a hollow plug portion l4 adapted to slidably engage the U- shaped socket portion 12. This plug portion l i continues into a face portion M adapted to engage a-portion of the face of the sash H.

The U-shaped portion l2 of the frame strip continuesinto an outer face portion I2 which is substantially parallel tothe offset continuation I2 The U-shaped portion 12 has its arms converging so as to better grip the plug portion N This plug portion I4 is thicker at the outer edge than at the inner edge. The free edge of the face portion [4' is bent inwards into a small resilient flange portion I4 which serves to hold the sash H spaced from the adjacent guiding strip 16 of the window frame and closes the gap between sash II and guiding strip I6. This is clearly shown in Fig, 1. The narrow base portion I4 is shaped to conform with the face of the grooves Il In Fig. 1 the sash is shown in operative position with the window strips in place. It should be noted that the plug portion I4 is engaged into the socket portion l2".

In Figs. 5-8 inclusive a modified form of the invention has been disclosed in which a plurality of tongues I! and N are stamped from portions of the center strips and act against other portions to control or adjust the frictional resistance between the strips when they are sliding. More particularly, the tongues I! are stamped from one of the arms of the U-shaped socket l2 and are adapted to engage against one of the sides of the plug portion is. The tongues l'l are stamped from the portion M and are adapted to frictionally and resiliently engage against the portion l2 Normally, these tongues hold the weather strips in relative spaced positions and greatly reduce the frictional resistance to sliding. Should the sashes be forced in one direction or the other these tongues are capable of flexing and bending without permanent injury.

While I have illustrated and described the pre- Q ferred embodiment of my invention, it is to be understood that I do not limit myself to the precise construction herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention what I claim as new and desire to secure by United States Letters Patent is:

1. The combination with a window frame and a sash slidably mounted therein, said sash having a completely grooved edge, of a frame strip having a broad base portion attached at one edge upon said frame and extending across said grooved edge and continuing into an inward offset portion which continues into a U-shaped socket portion, and a sash strip having a portion attached within said groove and extending outwards and continuing into a narrow base portion parallel to said offset portion and which continues into a plug portion adapted to slidably engage said socket portion, and a face portion continuing from said plug portion and engaging the face of said sash, said face portion having an edge turned inwards towards said sash, and a plurality of tongues stamped from said strips, the tongues from one strip engaging portions of the other strips for frictionally and resiliently holding the strips relative to each other.

2. The combination with a window frame and a sash slidably mounted therein, said sash having a completely grooved edge, of a frame strip having a broad base portion attached at one edge upon said frame and extending across said grooved edge and continuing into an inward offset portion which continues into a U-shaped socket portion, and a sash strip having a portion attached within said groove .and extending outwards and continuing into a narrow base portion parallel to said offset portion and which continues into a plug portion adapted to slidably engage said socket portion, and a face portion continuing from said plug portion and engaging the face of said sash, said face portion having an edge turned inwards towards said sash, and a plurality of tongues stamped from said strips,

the tongues from one strip engaging portions of the other strips for frictionally and resiliently holding the strips relative to each other, certain of said tongues being arranged upon one of the arms of said U-shaped socket and engaging one side of said plug portion.

3. The combination with .a window frame and a sash slidably mounted therein, said sash hav-- ing a completely grooved edge, of a frame strip having a broad base portion attached at one edge upon said frame and extending across said grooved edge and continuing into an inward offset portion which continues into a U-shaped socket portion, and a sash strip having a portion attached within said groove and extending outwards and continuing into a narrow base portion parallel to said offset portion and which continues into a plug portion adapted to slidably engage said socket portion, and a face portion continuing from said plug portion and engaging the face of said sash, said face portion having an edge turned inwards towards said sash, and a plurality of tongues stamped from said strips, the tongues from one strip engaging portions of the other strips for frictionally and resiliently holding the strips relative to each other, certain of said tongues being stamped from that portion of the sash strip which is opposed to the said offset portion, and engage against the outer face of said frame strip.

4. The combination with a window sash hav ing a grooved edge with the material to one side of said groove recessed, a sash strip having a portion attached within said groove and extending outwards of said groove and continuing into a base portion flat against said recessed portion, a plug portion continuing from and substantially parallel to said base portion and adapted to engage a frame strip in order to make said sash and window frame weatherproof, and a face portion continuing from said plug portion and extending substantially at right angles to said offset portion and engaging the face of said sash.

5. The combination with a window sash having a grooved edge with the material to one side of said groove recessed, a sash strip having a portion attached within said groove and extending outwards of said groove and continuing into a base portion fiat against said recessed portion, a plug portion continuing from and substantially parallel to said base portion and adapted to engage a frame strip in order to make said sash and window frame weatherproof, a face portion continuing from said plug portion and extending substantially at right angles to said offset portion and engaging the face of said sash, and a means for mounting said sash strip on said sash comprising, fastening elements within said grooved edge for securing the strip in position, and inturned edge portions on said face portion adapted to engage said sash to freely secure said sash strip to allow movement of said strip to prevent the said strip from being bent out of shape.

FRED W. KAMMERER. 

